Communication relay exchange control machine



FIG. 1 is a top, front, right side perspective view of a communication relay exchange control machine showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is another top perspective view thereof;

FIG. 9 is another top perspective view thereof shown on a slightly enlarged scale;

FIG. 10 is another top perspective view thereof shown on a reduced scale; and,

FIG. 11 is another top perspective view thereof.

The broken lines shown in FIGS. 8 through 11 illustrate structural environment and form no part of the claimed design. 

The ornamental design for a communication relay exchange control machine, as shown and described. 